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Each uploaded file has an associated image page. This term is also applied in the case of other file types e.g. pdfs etc
In the case of an image proper, the image page shows the full image (elsewhere often only a reduced version is shown), or, depending on preferences, a reduced version with a link to the full version, labelled "Download high resolution version (..x.., .. KB)".
Also the page is used as image description page, giving info about the image.
To make a link to the image description page of a file, or of an image without including the actual image, use a link like: [[:Image:Icon Idea.jpg]]. In the case of an image, the leading colon prevents the image being embedded in the article, and instead makes an ordinary link.
The description page consists of four parts:
- in the case of an image: the image itself
- description of the image/sound
- "Image history", see page history
- "Image links" or "File links"
- for an image in a template it lists only the template, not the pages in which the template occurs (for that see "What links here" of the template),
- if an image in a template depends on a parameter with the whole image code or the url of the image, or depends on {{PAGENAME}} or {{PAGENAMEE}}, it does neither show the final page nor the template. If only the caption is a parameter, the template is listed. Thus for Image:Tst.png the "Image links" section lists
The description part has also an edit history; it is labelled, somewhat confusingly, Image:xxx Revision history. It should not be confused with the Image history.
Useful things to include on an image description page
In the description part of the page you can put text. Initially the description part automatically contains the upload summary supplied by the user when uploading the first version (this text also shows up in the Image history section at the first upload line).
Description of the image
Eg: "Image of a goldfish in a small tank". This should not be an alternative text (see alternative text for images), but rather a description. This is useful for users who do not have direct access to the image, and is a temporary substitute for a proper longdesc tag.
You could also include the proportions of the image, in pixels.
Other versions
If other versions (especially a larger version) of the same image exists, link to them.
You can also include other images on image description pages.
Categorizing images
Images can be in the same category as other pages, but are treated separately: on the category page they are not included in the count of articles in the category, and they are displayed in a separate section, with for each a thumbnail and the name, see category page.
For categorizing a new image, the image page does not even have to be edited: the category tag can simply be put in the upload summary.
Nonexisting image
Nonexisting images show no image history section, see e.g. Image:Stop sign us.JPG.
The image description section may have content anyway, e.g. a redirect, text regarding a deleted image, or an enlarged image in the form of a line of code such as [[image:tst.png|thumb|left|500px|]] in Image:Tst.png (large).
Editing
The preview of the edit page of an image page only shows the editable part, not the image itself, the image history or the image links.
Through this edit page one cannot edit the image file itself: a new image file requires a new upload.
Protection
Protection of an image page is automatically also protection of the image itself: i.e. a new image under the name of the existing image can only be uploaded by a sysop.